When summer temperatures arrive, your heating system is probably the last thing on your mind. However, the warmer months are one of the best times to inspect your heating oil tank and prepare your home for the next heating season. Checking your tank now gives you...
Does your first floor feel perfectly comfortable while your upstairs feels hot and stuffy? If you're constantly adjusting the thermostat or relying on fans to keep your second floor cool, you're not alone. Uneven temperatures are one of the most common complaints homeowners have during the...
Choosing the right size air conditioner isn’t just about staying cool—it directly impacts your energy costs, comfort, and how long your system lasts. At D.E. Duffey & Sons, we often see homeowners dealing with systems that are either too large or too small, leading to...
As temperatures start to rise in Pennsylvania, your air conditioning system is about to work overtime. The last thing you want is for your AC to struggle—or break down—on the first hot day of the year. A quick pre-summer check can help you avoid costly...
As temperatures begin to rise, many homeowners wait until the first hot day to turn on their air conditioning—only to find it’s not working properly. At D.E. Duffey & Sons, we recommend testing your AC system early in the spring to make sure it’s ready...
As winter comes to an end and temperatures begin to rise, it’s time for homeowners to shift from heating their homes to preparing for warmer weather. This seasonal transition is the perfect opportunity to make sure your HVAC system is operating efficiently and ready for...
A new year is the perfect time for fresh starts—and that includes how you heat and cool your home. As we head into 2026, homeowners across southeastern Pennsylvania are looking for ways to stay comfortable, control energy costs, and make smart, long-term decisions for their...
When it comes to keeping your home comfortable, customers want more than just quality equipment or competitive pricing — they want dependable people who truly care. That’s why customer reviews are so important. They help homeowners across the Greater Philadelphia area discover why D.E. Duffey...
Looking for ways to make your home more energy-efficient — and environmentally friendly — this heating season? Investing in a high-efficiency HVAC system is one of the smartest, most sustainable choices you can make. 🌡️ Efficiency Equals Sustainability High-efficiency systems are designed to use less fuel to...
Fall in Pennsylvania can be unpredictable — one week feels like summer, the next week you’re waking up to chilly mornings. These temperature swings make it tough to know when to turn on the heat, open the windows, or do a little of both. The...